Home / 13,266.76-18,306.72-7,887.28

Finding the Fourth Proportional to 13,266.76, 18,306.72 and 7,887.28

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Solution

The fourth proportional to 13,266.76, 18,306.72 and 7,887.28 is: 10,883.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,266.76 : 18,306.72 = 7,887.28 : x
  2. Step 2: Convert to fraction form
    13,266.76/18,306.72 = 7,887.28/x
  3. Step 3: Cross multiply
    13,266.76x = 18,306.72 × 7,887.28
  4. Step 4: Simplify right side
    13,266.76x = 144,390,226.52
  5. Step 5: Solve for x
    x = 144,390,226.52/13,266.76
  6. Step 6: Final answer
    x = 10,883.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.